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3 years ago

What is another name for organic sedimentary rock?

1 answer:

5 0

Hello there,
Rocks that were once swampy sediments or peat beds contain carbon and are black, soft, and fossiliferous.(also known as organic sedimentary rock)

Hope this helps :)

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Which of the following has the units of g/mol?

o-na [289]

Answer: molar mass

Explanation:

6 0

3 years ago

What volume of 3.00 MM HClHCl in liters is needed to react completely (with nothing left over) with 0.750 LL of 0.500 MM Na2CO3N

AlladinOne [14]

Answer: The volume of HCl needed is 0.250 L

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$

For sodium carbonate:

Molarity of sodium carbonate solution = 0.500 M

Volume of solution = 0.750 L

Putting values in above equation, we get:

$0.500M=\frac{\text{Moles of sodium carbonate}}{0.750}\\\\\text{Moles of sodium carbonate}=(0.500mol/L\times 0.750L)=0.375mol$

The chemical equation for the reaction of sodium carbonate and HCl follows:

$Na_2CO_3+2HCl\rightarrow 2NaCl+H_2CO_3$

By Stoichiometry of the reaction:

1 mole of sodium carbonate reacts with 2 moles of HCl

So, 0.375 moles of sodium carbonate will react with = $\frac{2}{1}\times 0.375=0.750mol$ of HCl

Now, calculating the volume of HCl by using equation 1:

Moles of HCl = 0.750 moles

Molarity of HCl = 3.00 M

Putting values in equation 1, we get:

$3.00M=\frac{0.750mol}{\text{Volume of solution}}\\\\\text{Volume of solution}=\frac{0.750mol}{3.00mol/L}=0.250L$

Hence, the volume of HCl needed is 0.250 L

8 0

3 years ago

What is the bond order for a single covalent bond?

hram777 [196]

Answer:

We typically represent covalent bonds with a dash ( - ) between the atoms. This indicates a single bond. Ex: Cl - Cl

Single bond, double bond, triple bond.

Explanation:

We call it a single covalent bond because the atoms are sharing a single pair of electrons.

4 0

3 years ago

When an irregular shaped object was put in a graduated cylinder with an initial volume of 25 mL of water, the water level rose t

alexandr402 [8]

Answer:

0.24 g/mL

Explanation:

The density of an object is given by the ratio between its mass and its volume:

$\rho=\frac{m}{V}$

where

m is the mass of the object

V is its density

In this problem, we have:

m = 7.0 g is the mass of the object

The volume of an irregular shaped object can be measured by putting it into water, and by measuring the difference in water volume.

In this case,

$V_1=25 mL$ is the initial volume of water

$V_2=54 mL$ is the final volume of water

So the volume of the object is

$V=V_2-V_1=54-25=29 mL$

Therefore, the density of the object is:

$\rho = \frac{7.0 g}{29 mL}=0.24 g/mL$

7 0

3 years ago

Compute 6.28x10 ^13+7.30x10^11 answer three digits.

podryga [215]

Your answer is 161.94

7 0

3 years ago